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Finding the Fourth Proportional to 109,373.17, 163,669.90 and 75,645.97

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Solution

The fourth proportional to 109,373.17, 163,669.90 and 75,645.97 is: 113,199.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,373.17 : 163,669.90 = 75,645.97 : x
  2. Step 2: Convert to fraction form
    109,373.17/163,669.90 = 75,645.97/x
  3. Step 3: Cross multiply
    109,373.17x = 163,669.90 × 75,645.97
  4. Step 4: Simplify right side
    109,373.17x = 12,380,968,345.30
  5. Step 5: Solve for x
    x = 12,380,968,345.30/109,373.17
  6. Step 6: Final answer
    x = 113,199.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.